Apparatus for use in connection with the making of bags



A. POTDEVIN 2,115,282

APPARATUS FOR USE IN CONNECTION WITH THE MAKING OF BAGS April 26, 1938.

Original Filed April 22, 1932 4 Sheets-Sheet l INVENTOR y M ATTORNEYS 1BY 42 m APPARATUS FOR USE IN CONNECTION WITH THE MAKING OF BAGS A.POTDEVIN April 26, 1938.

Original Filed April 22, 1952 4 Sheets-Sheet 2 INVENTOR MM ATTORNEYS A.POTDEVIN April 26, 1938.

APPARATUS FOR USE IN CONNECTION WITH THE MAKING OF BAGS Original FiledApril 22, 1952 4 Sheets-Sheet s INVENTOR M m ATTORNEY April 26, 1938.POTDEVlN 2,115,282

APPARATUS FOR USE IN CONNECTION WITH THE MAKING OF BAGS Original FiledApril 22, 1932 4 Sheets-Sheet 4 ATTORN EY 'Patented Apr. 26, 1938APPARATUS FOR USE IN CONNECTION WETH TEE MAKING OF BAGS Adolph Potdevin,Garden City, N. .Y., assignor to Potdevin Machine Company, corporationof New York Brooklyn, N. Y., a

Original application April 22, 1932, Serial No.

606,839. Divided and this application September 29, 1934, Serial No. 746083 5 Claims.

This invention is directed to an improved apparatus for use inconnection with the making of paper bags, being primarily directed to anapparatus for folding a paper tape over the ends of a bag and stitchingthe same in place, the tape being supplied in a. continuous strip from asupply roll and advanced successively to an aplparatus for sewing thetape along the ends of the ag. ti In the drawings accompanying thisapplica- Fig. 1 is a side elevational view of my improved apparatus;

Fig. 2 is an end view of the apparatus substantialy along the line 2-2of Fig. 1;

Fig. 3 is a plan view;

Fig. 4 is a detail of one of the pushers employed for advancing the bagto the sewing apparatus;

Fig. 5 is a detail of the folding apparatus for the paper tape;

Fig. 6 is a section on the line G6 of Fig. 7;

Fig. 7-15 a plan view of the apparatus of Fig. 5;

Fig. 8 is a detail of the cutting mechanism;

Fig. 9 is a view substantially on the line 9-9 of Fi 3;

Fig. 10 is a view substantially on the line I0I0 of Fig. 3;

Fig. 11 is another view of the cutting mechanism; and

Fig. 12 is a plan view of the bags with paper strips sewn across theends thereof.

Referring to the drawings in detail: The machine of this inventioncomprises a feed table I elevated at a convenient distance above thefloor, the bags being advanced successively along this table to a pairof sewing machines intermediate the ends of the machine. These sewingmachines are'well known commercial apparatus and will v not be describedin any detail. They are designated 2 and 3 on the drawings.

The paper tape which I fold over and stitch to each end of the bag istaken from rolls 4 and 5 at opposite sides of the machine and the threademployed forsewing this tape to the bags is taken from bobbins Ii and 'Ialso at opposite sides of the machine. Pivoted to the bottom of theframe 8 of the machine are vertically extending pusher arms 9.- Two ormore of these arms are provided and the arms are adjustably aflixed to arock shaft I0 mounted in the lower part of the machineframe. Y

The table I of the machine is slotted longitudinally as shown at II andI2, for instance, in Fig. 3, and on the upper ends of each of the pusherarms 9 is pivoted a pusher I3 which under certain conditions projectsabove the top of the table through the slots above mentlo'ned- Each ofthese pushers is provided at its rear end with a spring I4, the lowerend of this spring being attached to a pin IS on the pusher arm.

Each pusher is provided with a roller I6 at its forward end, theserollers riding alongthe underside of the table i of the machine onmovement of the pushers to the left, or in a-forward direction, asviewed in Figs. 1 and 4, for instance.

Near the end of their travel the rollers I6 engage the forward end of arail I'I resiliently mounted below the table I. The rail is held in itsupward position as shown in full lines in Fig. 4, for instance, byspring I8. On reversal of the pushers-after they reach the limit oftheir forward movement, the rollers I6 ride along the underside of therail I1 so as to retract the pushers out of the slots I I and I2entirely, the pushers pivoting to their original position, however,under the action of the springs I4 as soon as they ride ed the rear ortail end of the rail I'l so that on the next forward movement of thepushers the rollers will travel along the upper side of the rail withthe pushers projecting through the slots II and I2 as before.

The rocker rod It carrying the pusher arms 9 is rocked through themedium of an arm the lower end of which is fast to the shaft I0. A link2| is adjustably secured to the upper end of the arm 20 by a slot andbolt connection 22 and 23, the other end of this link being attached tocrank 24. The drive for the crank 24 will be referred to hereinafter.

The adjustable connection of the link 2I to the arm 20 enables thetravel or throw of the pushers i3 to be varied so as to accommodate themachine to bags of different widths, it being appreciated that the bagsare fed forward to the sewing machines laterally as distinguished fromlengthwise.

As the bags are advanced by the pushers I3 they pass under hold-downplates 25 adjustably mounted, as will be brought out hereinafter.

At each side of the machine I provide means for applying paper tape tothe ends of the bag, the tape being stitched to the bag ends as the bagsprogress through the machine.

The paper taper, as has already been mentioned, is taken fromsupplyrolls 4 and 5 which are mounted on suitable standards at each sideof the. machine. Each tape asit passes into the machine travels over theface of a gluing roller 28 where glue is applied to the edge of thepaper as shown in Fig. 2, for example, the paper tape being designated21 and the adhesive 28; After each of the paper tapes receives itscoating of adhesive it passes around a roller 29 set at an angle of 90to the plane of the paper and from thence the paper tape passes into atroughshaped folding member 30, this member, as seen in Fig. '7 forinstance, gradually decreasing in width until at the discharge endthereof it is just about the width of a double thickness of the tape andthe thickness of the bag.

Extending into this trough-like folding member is a guide plate 3|spaced from the top of the member 38, the tape passing between thisplate 3| and the inner face of the member 38.

Extending into each of the folding members 38 is a plate 32 providing aguide plate for the bag, which in Fig. 5 I have designated 33, the bagsas they are advanced through the machine passing along the side of thisguide plate 32. As the paper tape leaves the roller 29 it is flat and atright angles to the end'of the bag. As the bag and tape advance throughthe folder or former 38 the tape is folded over the bag end to emergefrom the folder as is indicated in Fig. 5.

The hold-down plates 25 are adjustably mounted at the underside of aslotted bar 35 extending transversely of the machine and fastened ateach end to the side frames of the machine. Each plate is held to thisbar by a bolt 36, passing through the slot in the bar, and a nut 31. It

will be appreciated that this permits of each plate I being adjustedlaterally independently of the others.

The rollers 29 are adjustably supported on the transverse bar 35 bybrackets 38 and bolts and nuts 39. These brackets 38 also support thetrough-like members 38, the brackets being provided with a strap 48which may be secured to the member 38 in any suitable manner.

The members 32 above referred to are adjustably carried by thetransverse bar 35, being attached thereto by a bolt 4| and nut 42.

The plates 3| heretofore referred to which lie within the trough-shapedmembers 38 are carried by guide plates 45 extending longitudinally ofthe machine along each side thereof, these plates 45 properly directingthe end of the bag into the apparatus as the same progresses into thatpart of the machine where the tape is applied to the bag ends. Theseplates are set so as to hold the bags away from the tape until both bagand tape have moved into that part of the machine where the tape isapplied. The plates 45 are held in place on the machine frame by thumbscrews 45'. One of the plates 45 is capable of being adjustedtransversely of the machine to accommodate the machine to bags ofdifferent lengths by providing a plurality of holes 45" for receivingthe thumb screws.

It will be appreciated, therefore, that the rollers 29, brackets 38 andmember 38 are adjustable as a unit; also that guide plates 45 and plate3| are adjustable as a unit independently of the rollers 29, brackets 38and member 38 and that the plate 32 is likewise adjustable independentlyof each of these members.

The base of each of the sewing machines 2 and 3 is designated 46 and isadjustable transversely of the machine, being mounted in guideways 41 sothat the machine may be adjusted transversely of the machine toaccommodate bags of different lengths.

The bags as they pass from the sewing machines travel between feedrollers 48 and 49, 58, 5| and 52, 53, the latter discharging the bagsupon a receiving platform 54. The rollers 48, 58 and-52 are adjustablymounted on shafts 55, 58 and 61, respectively; while the rollers 49, 5|and 53 are adjustably mounted on shafts 58, 59 and 68, respectively.

One set of rollers 48 and 49 is adjustable with adjustment of the sewingmachine base on that side of the machine, the bearing for the shafts 55and 58 which carry the rollers 48 and 49 being provided in a member 58'which is rigid with the base of the sewing machine.

The rollers 48 and. 49 travel slightly faster than the machine feed soas to exert a gentle pull on the paper. Likewise the rollers 58 and 5|travel slightly faster than the rollers 48 and 49 to keep the papertaut, while the rollers 52 and 53 are further overspeeded toeflect quickdischarge.

Intermediate the sets of feed rollers 48, 49 and 58, 5| is thecutting-off mechanism 6| for the tape.

Reference numeral 98 designates a shaft extending transversely of themachine and mounted at each end in suitable bearings 9|. On each end ofthis shaft is a bevel gear 92, adjustable on the shaft and meshing withbevel gear 93 on the outer end of a stub shaft, each of these stubshafts carrying a cutter 6| at its inner end. The cutters are operatedintermittently to sever the paper tape adjacent the side of each bagafter the tape has been sewn in place thereon.

At one end the shaft 98 is provided with a bevel gear 94 in constantmesh with two pinion bevel gears 95 which are mounted in a rotatablehousing 96.

ratchet I8I adapted to cooperate with pawl I82.

The two pawls are pivotally mounted on sta tionary mount I83 and areconnected to each other for simultaneous operation by bar I84.

When one pawl is in engagement with its ratchet the other pawl is out ofengagement with its cooperating ratchet.

The connecting member or bar I84 is pivoted to one arm I85 of a bellcrank lever which is pivoted to the mount I83. The other arm of thisbell crank lever is pivotally connected to a link I86 the opposite endof which is pivotally connected to one arm I81 of ,a bell crank leverpivoted on the machine frame, the other arm I88 of this bell crank leverbeing connected through a link I89 with a cam follower II8 cooperatingwith cam III on the same shaft 1| with the crank 24 which drives thepusher mechanism for the bags as above described.

It will be seen that when the cam III is rotated the pawls I88 and I82will be actuated intermittently alternately to release ratchet 99 andlock ratchet I8I.

At the side of the machine opposite the differential just describedbearing members I I3 and J are attached by member II 5 to the sewingmachine base 46. Accordingly adjustment of the sewing machine will atthe same time and to the same degree effect adjustment of the rollers 48and 49 and the cutting mechanism adjacent thereto.

The driving motor for the machine is desi'gnated 62 and the shaft ofthis motor is provided with a gear 63 meshing with a gear 64 in meshwith a gear 65 on a shaft 66 carrying a worm 61. This worm meshes with aworm gear 68 on a short shaft carrying a bevel gear 89 meshing withbevel gear 78 on the shaft II carrying the crank 24.

The shaft I2 carrying the gear 64 also carries a gear 13 meshing withgear 14 on the shaft 58 of the feed roller 49. This shaft58 carries agear I5 meshing with gear 18 which is on the shaft 91.

The gear 14 also meshes with an intermediate gear 18 meshing with gear19 on the shaft 59 of the feed roller 5!, the gear I9 in turn meshingwith an intermediate gear 88 meshing with a gear 8| on the shaft 88 ofthe feed roller 53.

The shaft 12 which carries the gear 84 is provided at its other end witha gear 82. The gear 84 meshes with a small gear 83 while the gear 82meshes with a small gear 84, the gears 83 and 84 being the drive gearsof the two sewing machines. The shaft 12 which carries the gears 64 and82 extends entirely across the machine.

Reference numeral 85 designates a sleeve on the shaft 12 adjacentthegear 82 which drives sewing machine gear 84, this sleeve beingcarried by a hanger 88 attached to the sewing machine base 46. Insidethe sleeve 85 is a headed bushing keyed to the shaft 12. This bushingpasses through the gear 82 and the hub of the latter is secured theretoas by a screw, for instance. Consequently when the sewing machine base46 is adjusted gear 82 will be adjusted and hence remain in mesh withthe sewing machine gear 84.

Adjustment of the sewing machine base 46 and the rollers 48 and 48 iseffected by a threaded rod 81.

In operation the bags are fed successively to the table I and advancedby the pushers I 3 to the sewing machines 2 and 3. As the ends of thebags enter the forming members 38 they pass between the plate 32 of eachof these members.

and the side of the formingmember, the guide plates 3| properlydirecting the bag. Thetape from the rolls 4 and 5 is advanced with thebags, passing. through the forming members 38 where it is folded overthe ends of the bag, the tape previously having been glued at therollers 26. As a consequence when the bag reaches the sewing machines 2and 8 the tape has been folded over the bag ends and pasted down.

As the bags pass through the sewing machine the tape is sewn in placeand by the time this sewing operation is completed the cam II I hasmoved to such position that the pawl I82 will be in engagement with theratchet IM to prevent the housing of the differential mechanism whichconstitutes a part of the drive for the cutters from rotating.Consequently the pinion 94 will be driven to drive the shaft 98,rotating the cutters 8| and severing the tape. The"rotation of thesecutters is only momentary, further rotation of the cam I ll shifting thepawl I82 out of engagement with the ratchet IM and the pawl I88 intoengagement with the ratchet 98, this latter operation preventing furtherrotation of the cutters without, however, necessitating stopping thegear 18. The bag is then passed by the feed rollers 58, SI, 52, 58 tothe discharge platform 54.

It will be appreciated that by changing the worm gear 68 the machine canbe changed over to accommodate bags of different widths.

Itwill be understood that changes may be made in the mechanism abovedescribed within the purview of my invention.

This application is a division of my copending application Serial No.606,839, filed April 22, 1932 which has resulted in Patent No.1,989,943.

What I claim is:

1. In apparatus of the class described, the combination of means foradvancing articles successively along a support, means in the path ofthe articles for folding tape over the ends of the articles and tosecure the same in place to provide a plurality of advancing articlesconnected by the tape, a drive for the advancing means operatingcontinuously, rotary cutters for severing the said tape between adjacentarticles, driving mechanism for the cutters, and cam mechanism betweenthe cutter driving mechanism and the driving mechanism for the advancingmeans and controlled by the latter to effect intermittent rotation ofthe cutters.

2. In apparatus of the class described, the com bination of means foradvancing articles succes mechanism for the cutters, and a cam amxed t0the shaft of said crank for efiecting intermittent and timedrotation ofthe cutters.

3. In apparatus of the class described, the combination of pushermechanism for advancing articles successively along a support, means inthe path of the articles for folding tape over the ends of the articlesand to secure the same in place thereby to provide a plurality ofadvancing articles connected to each other by said tape, a drivingmotor, a crank driven by said motor for driving the pusher mechanism,forwarding rollers driven by said motor for continuing the advance ofthe connected articles, rotary cutters for severing the tape betweenadjacent articles, and a cam rotating in fixed relation to said crankfor effecting intermittent rotation of said cutters.

4. In apparatus of the class described, the'combination of pushermechanism for advancing articles successively along a support, means inthe path of the articles for folding tape over the ends of the articlesand to'secure the same in place thereby to provide a plurality ofadvancing articles connected to each other by said tape, overspeededforwarding rollers for receiving the connected articles, rotary cuttersfor severing the tape between adjacent articles, and cam mechanismdriven in timed relation to said pusher mechanism for intermittentlyrotating said cutters.

5. In apparatus of the class described, the combination of mechanism foradvancing articles successively along a support, means in the path ofthe articles for folding tape over the ends of the articles and tosecure the same in place thereby to provide a plurality of advancingarticles connected to each other by said tape, rotary cutters forsevering the tape between adjacent articles, cam mechanism to effectintermittent rotation of said cutters, and pairs of rollers at each sideof said cutters operating at different speeds to maintain tension on thetape during the severing operation.

ADOLPH PO'I'DEVIN.

